Clone the repo and move to it's base directory
$ npm i -g http-server
$ http-serverNavigate to http://localhost:8080 or the other chosen path
Navigate to file://<path to repo>/index.html
black textarea - pick the current working label
backspace - remove last point. If there are no more points on the label, the label gets deleted
arrow keys - move the last dot in that direction
click - create a new point
data - it's console.logged at every change
image - right click the image, and the raster of the paths will be selected. Then pick "copy image" or "save image"
copy-paste the logged output to line 3 of data.js